Albert Barnes on Luke 10:36

Was neighbour. Showed the kindness of a neighbour, or evinced the proper feelings of a neighbour. The lawyer had asked him who was his neighbour? Jesus in this beautiful narrative showed him who and what a neighbour was, and he did this in a way that disarmed his prejudice, deeply affected him in regard to his own duty, and evinced the beauty of religion. Had he at first told him that a Samaritan might be a neighbour to a Jew and deserve his kindness, he would have been at once revolted at it; but when, by a beautiful and affecting narrative, he brought the man himself to see that it might be, he was constrained to admit it. Here we see the beauty of a parable and its use. It disarmed prejudice, fixed the attention, took the mind gently yet irresistibly, and prevented the possibility of cavil or objection. Compare, also, the address of Nathan to David, 2Sam 12:1-7.